At this point in the NFL, unless you think a guy is a once in a lifetime player, it would be extremely hard to justify drafting a running back early. You can get competent replacements far too cheaply/easily to justify it.

Ivory was banged up and has serious injury concerns, Darren Sproles didn't sign with the team until a few months after the draft, and the only RB on the roster that was sure to make the team was Pierre Thomas. In hindsight, it was a bad draft pick (and yes, I still criticize it). If you wanted a RB that badly then draft one in the 2nd or 3rd round. Don't trade up to select one in the first.

Brilliant letting one of Scott Pioli's henchmen have his own team to ruin. One of the premier GM jobs in the NFL and it gets handed to a stupid **** who makes three facepalm moves for every good one. Awesome. Just like handing a new Mercedes to a 16 year old girl who's already been in three wrecks.